* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: #0d0d1a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  padding: 16px;
  font-family: 'Courier New', monospace;
  color: #ddd;
}

h1 {
  font-size: 1.1em;
  margin-bottom: 8px;
  color: #aad4ff;
  letter-spacing: 2px;
  text-transform: uppercase;
}

#game-wrapper {
  position: relative;
  border: 2px solid #334;
  border-radius: 4px;
  overflow: hidden;
}

canvas {
  display: block;
}

#flash-message {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Courier New', monospace;
  font-size: 28px;
  font-weight: bold;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  text-shadow: 0 0 16px currentColor;
  white-space: nowrap;
}

#controls-hint {
  margin-top: 8px;
  font-size: 0.78em;
  color: #778;
}

#design-note {
  margin-top: 14px;
  max-width: 720px;
  background: #111827;
  border: 1px solid #2a3a5a;
  border-radius: 6px;
  padding: 14px 18px;
  font-size: 0.82em;
  line-height: 1.6;
  color: #99aacc;
}

#design-note strong { color: #aad4ff; }
#design-note h3 { color: #aad4ff; margin-bottom: 6px; font-size: 0.95em; letter-spacing: 1px; }